finished appendix-05,add a blank to appendix-02 and 03

src/appendix-02-operators.md

@@ -1,6 +1,6 @@
-## B - 运算符与符号
+## 附录B - 运算符与符号
 > [appendix-02-operators.md](https://github.com/rust-lang/book/blob/master/second-edition/src/appendix-02-operators.md)
-><br />
+> <br />
 > commit d50521fc08e51892cdf1edf5e35f3847a42f9432
 
 [commit]: https://github.com/rust-lang/book/commit/d50521fc08e51892cdf1edf5e35f3847a42f9432

src/appendix-03-derivable-traits.md

@@ -1,7 +1,7 @@
 # 附录C - 可派生的 trait
 
 > [appendix-03-derivable-traits.md][appendix-03]
-><br />
+> <br />
 > commit 32215c1d96c9046c0b553a05fa5ec3ede2e125c3
 
 [appendix-03]: https://github.com/rust-lang/book/blob/master/second-edition/src/appendix-03-derivable-traits.md

src/appendix-05-translation.md

@@ -1 +1,25 @@
-## E - 本书翻译
+## 附录 E: 本书翻译
+
+> [appendix-05-translation.md](https://github.com/rust-lang/book/blob/master/second-edition/src/appendix-05-translation.md)
+> <br />
+> commit 9c3756a33e6c1aa07a762ffa853fcdfcffb48ddc
+
+一些非英语语言的资源。多数仍在翻译中；查阅[翻译标签][see]来帮助我们或使我们知道新的翻译！
+
+[label]: https://github.com/rust-lang/book/issues?q=is%3Aopen+is%3Aissue+label%3ATranslations
+
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